| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1172.42 | USD | 20251202 |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 1313.67 | USD | 20251202 |
| Dongying Hebang Chemical Co., Ltd. | China national standards | MT | 1356.05 | USD | 20251202 |
| Jiangsu Yingte Chemical Co., Ltd. | China national standards | MT | 1144.16 | USD | 20251202 |
| Xiamen Yudeshun Chemical Products Co., Ltd. | China national standards | MT | 1511.43 | USD | 20251202 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1186.54 | USD | 20251202 |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 1271.29 | USD | 20251202 |
| Dongying Liancheng Chemical Co., Ltd. | China national standards | MT | 1200.67 | USD | 20251202 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1151.23 | USD | 20251202 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1175.24 | USD | 20251202 |